Compiling Mod_perl for Apache 2.4 on OS X 10.10 Yosemite

OS X 10.10 Yosemite upgrades the default Apache install from 2.2 in Mavericks to 2.4. In general, this is a good thing, but if you were using mod_perl, perhaps for mod_cfml with Railo for example, then mod_perl will no longer work.

Recently, there have been several commits so mod_perl will now support Apache 2.4. Since there are no binary releases yet, we will have to compile it ourselves.